Answer:
7.4 x (87-24)
Step-by-step explanation:
The translation is that you multiply the difference of two numbers. So you must get the difference first, that's why you put parenthesis around 87-24. Your answers are sideways and are hard to read, so I'll just give you the correct answer without the answer choice.
Answer:
624
Step-by-step explanation:
the area of the triangles:
12*10 = 120
120/2 = 60
since there are 2 triangles of the same dimensions that make up the surface area 60 + 60 = 120
area of the rectangles:
13*14 = 182
since there are 2 rectangles of the same dimensions 182 + 182 = 364
The last rectangular:
10*14 = 140
add all areas:
120 + 364 + 140 = 624
P/9 = 90
Multiply 9 to 90 to isolate the variable.
P = 9 x 90
P = 810
Answer:
63.5
Step-by-step explanation:
The diagonals of a rhombus bisect opposite angles.
The longer diagonal bisects the 42° angle
The larger angle of the rhombus is 180 - 42 = 138
Let x = the length of the longer diagonal
You know two sides and the included angle of a triangle.
Using the law of cosines we get
x^2 = 34^2 + 34^2 - 2(34)(34) cos 138
= 1156 + 1156 - 2312 c0s 138
= 4030.1508...
x = sq rt 4030.1508...
= 63.5
Answer:
x=1
Step-by-step explanation:
4 - 5(3- 2x) = -2x + 1
Distribute
4 - 15 +10x = -2x+1
Combine like terms
-11 +10x = -2x+1
Add 2x to each side
-11+10x+2x = -2x+2x +1
-11+12x = 1
Add 11 to each side
-11 +11 + 12x = 11+1
12x = 12
Divide each side by
12x/12 = 12/12
x = 1
